refactor(x-bus): move to x-components

[davidglezz]

Pull request template

Describe the purpose of the change, the specific changes done in detail, and the issue you have fixed.

Motivation and context

Move x-bus and x-priority-queue within x-components:

• x-priority-queue is only used by x-bus
• x-bus is always used with x-components
• Each file is ~100 lines of code (fits more with a utility file)
• Both packages requires setup and maintenance of tools (Jest, typescript, eslint, build, package.json scripts, ...)
  • Changelogs only have tool maintenance, no source changes.
• Both was designed for x-components
• NPM stats: No one is using this packages

This means that it does not need to be a standalone package.

Used by:

• Motive-x (to mock x-bus in the tests)
• Playboards
• No big deal: https://github.com/search?q=org%3Aempathyco+%40empathyco%2Fx-bus+-repo%3Aempathyco%2Fx&type=code

Migration:

• Remove "@empathyco/x-bus" dep and update imports:

-import { ... } from '@empathyco/x-bus'
+import { ... } from '@empathyco/x-components/x-bus'

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that causes existing functionality to not work as expected)
• Change requires a documentation update

What is the destination branch of this PR?

• Main
• Other. Specify:

How has this been tested?

Tests performed according to testing guidelines:

Checklist:

• My code follows the style guidelines of this project.
• I have performed a self-review on my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.

[lauramargar]

LGTM